myevic repository firmware building Dockerfile (not confirmed to be working on device, but compiles alright)

Dockerfile

# Use Ubuntu 20.04 as base
FROM ubuntu:20.04

# Prevent interactive prompts
ENV DEBIAN_FRONTEND=noninteractive

# Install system dependencies
RUN apt-get update && apt-get install -y \
    wget \
    bzip2 \
    make \
    git \
    python3 \
    python3-pip \
    python3-setuptools \
    libusb-1.0-0-dev \
    libudev-dev \
    build-essential \
    python3-dev \
    libjpeg-dev \
    zlib1g-dev \
    libfreetype6-dev \
    libncurses5 \
    && rm -rf /var/lib/apt/lists/*

# 1. Install ARM GCC 6-2017-q2
# We use this specific version to match the project's era.
RUN wget -qO- https://developer.arm.com/-/media/Files/downloads/gnu-rm/6-2017q2/gcc-arm-none-eabi-6-2017-q2-update-linux.tar.bz2 | tar -xj -C /opt \
    && mv /opt/gcc-arm-none-eabi-6-2017-q2-update /opt/gcc-arm

# Add toolchain to PATH
ENV PATH="/opt/gcc-arm/bin:${PATH}"

# 2. Fix Toolchain Paths for myevic
# The Makefile constructs a path like '/opt/gcc-arm/gcc/...' which doesn't exist (should be lib/gcc).
RUN ln -s /opt/gcc-arm/lib/gcc /opt/gcc-arm/gcc

# 3. Populate 'v7e-m' Library Directories with SOFTFP libraries
# The linker needs libraries in a 'v7e-m' subdirectory.
# We search for 'softfp' libraries (Soft ABI, FPU instructions) to match the build flags.
# If 'softfp' is not found, we fall back to the base 'v7e-m' (Soft ABI, Soft Float).

# Fix GCC libraries (libgcc.a)
RUN mkdir -p /opt/gcc-arm/lib/gcc/arm-none-eabi/6.3.1/v7e-m \
    && SRC=$(find /opt/gcc-arm/lib/gcc/arm-none-eabi/6.3.1 -name libgcc.a | grep "v7e-m" | grep "softfp" | head -n 1) \
    && if [ -z "$SRC" ]; then SRC=$(find /opt/gcc-arm/lib/gcc/arm-none-eabi/6.3.1 -name libgcc.a | grep "v7e-m" | grep -v "hard" | head -n 1); fi \
    && cp "$SRC" /opt/gcc-arm/lib/gcc/arm-none-eabi/6.3.1/v7e-m/

# Fix Standard libraries (libc.a, libm.a, libnosys.a)
RUN mkdir -p /opt/gcc-arm/arm-none-eabi/lib/v7e-m \
    && for lib in libc.a libm.a libnosys.a; do \
        SRC=$(find /opt/gcc-arm/arm-none-eabi/lib -name "$lib" | grep "v7e-m" | grep "softfp" | head -n 1); \
        if [ -z "$SRC" ]; then SRC=$(find /opt/gcc-arm/arm-none-eabi/lib -name "$lib" | grep "v7e-m" | grep -v "hard" | head -n 1); fi; \
        cp "$SRC" /opt/gcc-arm/arm-none-eabi/lib/v7e-m/; \
    done

# 4. Install Python dependencies
RUN pip3 install --upgrade pip setuptools wheel \
    && pip3 install pybind11 pillow crcmod

# 5. Install python-evic
RUN git clone https://github.com/ClockSelect/python-evic.git /tmp/python-evic \
    && cd /tmp/python-evic \
    && pip3 install . \
    && rm -rf /tmp/python-evic

# Set working directory
WORKDIR /usr/src/myevic

# 6. Copy local source code
COPY . .

# 7. Setup Nuvoton SDK (Library only)
RUN git clone --depth 1 https://github.com/OpenNuvoton/M451BSP.git /tmp/bsp \
    && mkdir -p nuvoton-sdk \
    && cp -r /tmp/bsp/Library nuvoton-sdk/ \
    && rm -rf /tmp/bsp

# 8. Build the firmware
ENV EVICSDK=.
RUN make

# 9. Output Command
CMD ["sh", "-c", "cp -v bin/myevic.bin /output/ && echo 'Build successful: myevic.bin copied to output.'"]